The historic 12th century Langney Priory at Eastbourne, currently being restored, has received a £500 boost from Sussex Police.
It was secured by Police Community Support Officer Daryl Holter from the Police Property Act Fund, made up of monies received by the police from property confiscated by order of the court and then sold.
PCSO Holter, a heritage crime officer, said: " I am really happy to help the team leading the project.
"The aim is to restore Eastbourne's oldest building and use it as a community resource to promote new business and become an essential part of the local community accessible to all.
"Particular aims are to train and up-skill all ages and hard-to-reach groups including long-term unemployed people, those with mental illness struggling to get back into work, and ex-offenders in such areas as hospitality, catering, construction and horticulture."
PCSO Holter said the Priory dates back to 1121 and described it as "a vital part of Eastbourne's history".
Community liaison manager James Murray said: “The funding is a great step forwards. We will be purchasing closed circuit television (CCTV) to cover the site and help us with security. We are very grateful to Sussex Police for making it a possibility”.